Static Induction Transistors (SIT's), which resemble triodes in performance, are the trendy thing to discuss these days around the solid state forums. But unless you're Nelson Pass, you can't get your hands on them!

Or can you? Michael Rothacher has written an article about building a simple amplifier using SIT devices that are available right now! Check out the story here: L’Amp: A Simple SIT Amp: Part 1